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tax base
Tax Basics
Taxes are an important part of life, and it is important to understand the tax system. This article will provide an introduction to tax basics, including the history of taxation, how taxes are used, different types of taxes, and tax filing requirements.
History of Taxation
Taxation h......
08/07/2023 
1068 
Lila
slave
The Importance of Friendship
A famous philosopher, Aristotle, once said “friendship is a single soul dwelling in two bodies”. It is an important factor that helps to shape the identities of individuals, and helps to create a bond between them that can last a lifetime. Friendship is based on tr......
Hole pattern
Intro
Porosity is a critical engineering property of materials, as it affects their overall performance. Porosity is defined as the ratio of void volume to total ore volume in the material. Porosity can be caused either by natural processes, such as aging, or by the deliberate introduction of void......
ledeburite
Myoblastoma, or Malignant Peritoneal mesothelioma, is a cancerous tumour found within the peritoneal cavity, which is located within the abdomen. It is a rare form of cancer, accounting for only 10% of abdominal tumours, and is difficult to diagnosis.
Myoblastoma is caused by the asbestos exposur......
Metallographic diagram of 50 steel (860°C air cooling)
Metallographic analysis of Fe-50 steel at 860℃
Introduction
Metallography is a method used to study the microstructure and composition of metals. Metallography is useful in understanding how alloys behave differently under different external forces and, as such, is essential in materials scienc......
33CrNi3Mo steel (annealed) low microstructure and non-metallic inclusions
Abstract
This paper introduces the microstructure and nonmetal inclusion characteristics of 33CrNi3Mo steel (annealed). According to the result, the microstructure of 33CrNi3Mo steel (annealed) mostly consists of carbide and ferrite, and tiny amount of austenite. The ferrite grain size of 33CrNim......
Compressive strength of pellets
High Pressure Strength of Spherical Coal Groups
High pressure strength of spherical coal groups is an important factor in the study of coal combustion and energy restoration. As coal and hook relationship, with the increase of pressure, the coal group increases significantly until the pressure rea......
Magnetic stability
Magnetism is an intriguing phenomenon that has held humankind captivated and fascinated for centuries. From the mesopotamian lodestone to the first modern permanent magnet developed in 1820, magnetism has been essential to the development of society as we know it.
Magnetism as a property is prese......
Yellow MC and red MC carbides are distributed on the green matrix
Carbon nanomaterials, such as multi-walled nanotubes (MWNTs) and mesoporous carbon nanocrystals (MCs), have emerged as essential building blocks of nanotechnology and nanomaterial engineering due to their unique properties, including high electrical conductivity, mechanical strength, and chemical ......
Middle mine
The History of Mining
Mining has long been a part of human civilization. Going back as far as 3,000 BCE, humans have been adept at exploiting the resources of the earth for their benefit. From the Bronze age through the Roman Empire, and across hundreds of cultures, taking resources from the grou......
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